import java.util.Scanner;

public class Demo {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextInt()) { // 注意 while 处理多个 case
            int n = in.nextInt();
            int count = 0;

            for(int i = 0; i < 32; i++) {
                if(((n >> i) & 1) == 1 ) {
                    count++;
                }
            }

            System.out.println(count);
        }
    }
}
